Samuel gissing-er



k@uitrit gisten @anni @Hire SAMUEL GISSINGER, vOF ALLEGHENY CITY, PENNSYALYANIA. Letters Patent life. 72,390, dated December 17, 1867.

IMPROVEMENT IN .GOAL-MINING MAGHINB DRILL-CARRIAGE.

itetlgthuls nient tu in tlgtsi Enters @anni mit making gaat if tigetame.

T0 ALL WHOM IT MAY CONERN: I l

Be it known that I, SAMUEL- GISSINGER, of the city and county ofAllegheny, and State 4of Pennsylvania, have invented a new and usefulImprovement in Machines for Mining Coal and I do hereby declare that thefollowing is a full and ex-act description thereof, reference being hadto the accompanying drawings, and tothe letters of reference markedthereon.

The nature of my invention consists in undermining coal by operating aseries of drills by means of wheels,

i and moving or feeding the drills up to their work by means of a screw,said drills, wheels, and screw being constructed, arranged, andoperating in the manner hereinafter described. v

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation. In the ieeompanyingdrawings, which form part of my specification- Figure 1 represents anend elevation of my improvement in machines for mining coal.

Figure 2 is a top view or plan of the same.

In the drawings, A and A represent two end pieces of a frame, which endpieces are held in position by 'two round bars marked B. These bars passthrough openings in the lower part of the endpieces yC of thedrillcarriage. The end pieces C are held inI position by two round barsmarked O. The frame whioh'supports the drill-carriage is composed of theend pieces A and A', and'bars B, and the drill-carriage is composed-ofthe end pieces C, land bars O. The drill-bars marked 1 2 3 have theirbearings in the end pieces C. The front end-ot' these drill-bars move inopenings made in the end piece A of the frame whichsupports thedrill-carriage. On the bn'ck end of the drill-bars 1, 2, and 3, areVsecured wheels marked w, w, and wz. These wheels gear into each other,and are the'same diameter-,l and each wheel is provided with the samenumber of cogs or teeth. To the back end of the'drill-bars 2 isconnected a screw, c, which is made operative by means of a clamp ortongs marked X, pivoted tothe end piece-marked A. 0n the back end of thedrill-bar 2 is a large wheel marked i'.

f represents au' ordinary balance-wheel. k represents a crank; g and 7i,driving-wheels.

As the construction and arrangement of the several parts'will be readilyunderstood from the above description, and by reference to theaccompanying drawings, without further description, I will thereforepiocecd to' describe its operation, which is as follows: Y f

Having the frame which supports the drill-carriage securely braced down,by placingposts on the 'plates n of the end pieces A and A', said poststo extend tothe root' of the coal-pit, and so wedged as to hold theframe of the machine in a xed position, I then draw the drill-carriageback near to theend piece A; then Vclose the clamp-screw nut-a: upon thescrew e; I then turn the crank c, which will turn the wheel g, whichwill revolve the wheelh, which will revolve the wheel z', which willrevolve the wheel 'w and drill-bar 2, and the wheel fw will revolve thewheels w1 and we, and thereby revolve drill-bars 1 and 2. The revolvingof the drill-bar 2, and the screw e attached vto it, will cause thedrill-carriage to move forward by the screw e turning in the clamp-screwnut z, thereby feeding the drills m up to their work. The drills m, whenarranged on the drill-bars, as 'shown i in iig. 2, will cut out a singlecavity, that is to say, there wll,be no coal4 left standing in thedrills m. vWhen the drills have been moved forward as far as the screw ewill drive them, thcscrew-clamp X is ope-ned, as indicated by the dottedlines ze', ai-,d the drill-carriage is drawnhaek', the screw-clamp X isclosed, and the machine moved to the place desired, and again secured inthe manner described, and it is again ready for drilling,

bearing in, or undermining the coal. d Y

Having thus described the nature, construction, and operation of my saidimprovement, what I claim as of The drill-carriage, `constructed asherein described, and provided with drill-bars made operative throughthe medium of the wheels w, w1, wg, z', t, and g, arranged and operatingin the `manner and for the purpose set forth. I also claim, incombination with 'the above, the screw e und the clamp-screw nut z,constructed, arranged, and operating substantially vas herein described,and for the purpose set forth.

SAMUEL GISSINGER.

Witnesses:

JAMES J. J ouNsroN, Joan SMITH, Jr.

